linux-toradex.git/include/linux/drbd_genl.h, branch v3.12.51

drbd: Allow online change of al-stripes and al-stripe-size

2013-06-28T14:04:36+00:00

Allow to change the AL layout with an resize operation. For that
the reisze command gets two new fields: al_stripes and al_stripe_size.

In order to make the operation crash save:
1) Lock out all IO and MD-IO
2) Write the super block with MDF_PRIMARY_IND clear
3) write the bitmap to the new location (all zeros, since
   we allow only while connected)
4) Initialize the new AL-area
5) Write the super block with the restored MDF_PRIMARY_IND.
6) Unfreeze all IO

Since the AL-layout has no influence on the protocol, this operation
needs to be beforemed on both sides of a resource (if intended).

Signed-off-by: Andreas Gruenbacher 
Signed-off-by: Philipp Reisner 
Signed-off-by: Jens Axboe

drbd: pass some more information to userspace.

2012-11-09T13:05:45+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: introduce stop-sector to online verify

2012-11-09T13:05:32+00:00

We now can schedule only a specific range of sectors for online verify,
or interrupt a running verify without interrupting the connection.

Had to bump the protocol version differently, we are now 101.
Added verify_can_do_stop_sector() { protocol >= 97 && protocol != 100; }

Also, the return value convention for worker callbacks has changed,
we returned "true/false" for "keep the connection up" in 8.3,
we return 0 for success and <= for failure in 8.4.
Affected: receive_state()

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: New disk option al-updates

2012-11-08T15:58:31+00:00

By disabling al-updates one might increase performace. The price for
that is that in case a crashed primary (that had al-updates disabled)
is reintegraded, it will receive a full-resync instead of a bitmap
based resync.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Load balancing of read requests

2012-11-08T15:58:10+00:00

New config option for the disk secition "read-balancing", with
the values: prefer-local, prefer-remote, round-robin, when-congested-remote.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: detach from frozen backing device

2012-11-08T15:57:50+00:00

* drbd-8.3:
  documentation: Documented detach's --force and disk's --disk-timeout
  drbd: Implemented the disk-timeout option
  drbd: Force flag for the detach operation
  drbd: Allow new IOs while the local disk in in FAILED state
  drbd: Bitmap IO functions can not return prematurely if the disk breaks
  drbd: Added a kref to bm_aio_ctx
  drbd: Hold a reference to ldev while doing meta-data IO
  drbd: Keep a reference to the bio until the completion handler finished
  drbd: Implemented wait_until_done_or_disk_failure()
  drbd: Replaced md_io_mutex by an atomic: md_io_in_use
  drbd: moved md_io into mdev
  drbd: Immediately allow completion of IOs, that wait for IO completions on a failed disk
  drbd: Keep a reference to barrier acked requests

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Rename --dry-run to --tentative

2012-11-08T15:57:47+00:00

drbdadm already has a --dry-run option, so this option cannot directly be
passed through to drbdsetup.  Rename the drbdsetup option to resolve this
conflict.

For backward compatibility, make --dry-run an alias of --tentative.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Convert the generic netlink interface to accept connection endpoints

2012-11-08T15:57:46+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Also need to check for DRBD_GENLA_F_MANDATORY flags before nla_find_nested()

2012-11-08T15:57:45+00:00

This is done by introducing drbd_nla_find_nested() which handles the flag
before calling nla_find_nested().

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Use the terminology suggested by the command names in the source code and messages

2012-11-08T15:57:44+00:00

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg